Based off of Jaaskinal's Small Chaindrive. I didn't touch the logic much.
Disclaimer: Does not have thrusters for convenience and does not generate its own power. The "dockable" part is more of a requirement.
This 3x3x6 Shield Generator allows ships to have a separate shield generating entity on board. The ship the Shield Generator is docked on can generate shields at maximum efficiency while under fire and even while shields are normally on 10 second recovery.
The Shield Generator is more efficient as size increases as it does not waste as much block space on a Ship Core, Rail Docker, Shield Supply Computer, and Cannon Computer per docked Shield Generator. I would recommend making larger versions of this to increase efficiency.
Honestly, this more of a reference than an actual thing to put on your ship. Just make it bigger and better. Just don't forget to put Shield Capacitors on it.
Shield Capacity: 220
Shield Regen: 214 per second (it wouldn't be a perfect rectangular prism and dockable if I made it 220, could be better if I was better with logic)
Note that there is currently a glitch that displays the ship as "Under Fire" and regenerating at 25% instead of full. It still regenerates 214 per second, despite the notification (can be seen while inside ship). Bug is confirmed to be fixed eventually: T292. Thanks to Mork2 for bringing this to my attention.
Dockable
The Main Ship Representation
The Testing Platform (in hindsight, my target shouldn't be black hull). The Target is part of the Main Ship